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  • Pentax SMC DA* Series 16-50mm f/2.8 ED AL IF SDM Wide Angle Zoom Lens for Pentax Digital SLR Cameras
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Pentax SMC DA* Series 16-50mm f/2.8 ED AL IF SDM Wide Angle Zoom Lens for Pentax Digital SLR Cameras

by Pentax
| 4 answered questions

List Price: $1,299.95
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Frequently Bought Together

Pentax SMC DA* Series 16-50mm f/2.8 ED AL IF SDM Wide Angle Zoom Lens for Pentax Digital SLR Cameras + B+W 77mm Clear UV Haze with Multi-Resistant Coating (010M)
Price for both: $922.50

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Technical Details

  • Brand Name: Pentax
  • Model: B000NO5QV6
  • Lens Type: Wide-angle
  • Minimum focal length: 16 mm
  • Maximum focal length: 50 mm
See more technical details

Read about our customers' top-rated lenses and cameras on our review pages: Lenses, Digital SLR Cameras, Compact System Cameras

Product Details

  • Product Dimensions: 3.9 x 3.3 x 3.3 inches ; 1.2 pounds
  • Shipping Weight: 2 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B000NO5QV6
  • Item model number: B000NO5QV6
  • Average Customer Review: 3.9 out of 5 stars  See all reviews (50 customer reviews)
  • Date first available at Amazon.com: June 17, 2003

Product Description

Product Description

Pentax smc DA * 16-50mm F2.8 ED/AL (IF) SDM

Amazon.com

Designed for exclusive use with Pentax digital SLR cameras, the Pentax DA* 16-50mm f/2.8 wide-angle zoom lens is a terrific choice for landscapes, portraiture, and just about any other application. The lens features a tightly sealed, weather-resistant and dust-resistant construction to enhance durability in rainy or dusty conditions. The lens's three aspherical elements and two special optical glass elements, meanwhile, help compensate for chromatic and spherical aberration, producing images with superior contrast, clarity, and edge-to-edge sharpness. And thanks to the lens's Pentax-original Quick-Shift Focus System, you can easily and instantly switch from autofocus to manual focus.

Specifications

  • Focal length: 16-50mm
  • Maximum aperture: f/2.8
  • Minimum aperture: f/22
  • Lens construction: 15 elements in 12 groups
  • Angle of view: 83 to 31.5 degrees (when used with Pentax digital SLR camera body)
  • Number of diaphragm blades: 9
  • Metering system: TTL open-aperture metering
  • Minimum focusing distance: 0.3 meters
  • Maximum magnification: 0.21x
  • Filter size: 77mm
  • Corresponding AF mounts: Pentax KAF2
  • Dimensions: 3.3 inches in diameter and 3.9 inches long
  • Weight: 19.9 ounces (without hood)
  • Warranty: 1 year

Customer Reviews

The zoom action is very smooth and the auto focus is quite rapid.
V. Waldron
This lens has had a very big quality control problem that you can read about all over the net.
A. Arena
A very good lens, it still doesn't have the build quality "feel" of the Pentax nor Nikon.
Hiram Grant

Most Helpful Customer Reviews

81 of 84 people found the following review helpful By Hiram Grant on November 25, 2007
If you've read my previous reviews, you know that I'm a retail camera salesperson. I get to use a wide variety of equipment, but I'm a bit picky on what I buy myself. I own this lens.

I couldn't be more pleased with this lens for my K10D. The images are crisp at all focal lengths and apertures. The focusing is both fast and smooth. (Note: it will require updating to firmware version 1.3 for the K10D to autofocus properly.) Build quality is top-notch, and the weather-proofing is nice, although I doubt I'll test that often.

Pentax has also equiped this lens with the older drive system, so that it can be used on older digital cameras, but the noise level goes up, and the AF performance, while decent, goes down.

This is an amazingly good deal compared to either the Canon or Nikon lenses in the same range. The Nikon has about the same build quality, but costs considerably more. The Canon has the IS system built into the lens (not necessary with Pentax); therefore, it costs about the same as the Nikon. A very good lens, it still doesn't have the build quality "feel" of the Pentax nor Nikon. Additionally, the 16mm makes the Pentax a bit wider, a big advantage for my type of shooting.

Simply put, without this lens, I'd be shooting Nikon.
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29 of 30 people found the following review helpful By Dan_A on January 4, 2008
Verified Purchase
The built quality is exceptional. sharp, smooth and fast AF. Be sure to update your k10D firmware to v 1.3 before using this lens, so you wont be like me at first scratching my head wondering why a lens this expensive is noisy and vibrates. The lens is made in vietnam-nothing wrong with that, for some reason I was under the impression it was made in Japan.
7/16/11 Update
This lens did not last, been repaired/replaced twice already because it quit autofocusing. Used it from k10 to K5. Changed my star rating from 4 to 2
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38 of 41 people found the following review helpful By Bruno P. on March 30, 2009
*****2012 Update: Used it on a K7 for over 2 years now. Still the best zoom lens ever, would buy it again in a heartbeat. On par with the Nikon 17-55mm 2.8 (which is ancient, double the weight and twice the the price). Way to go Pentax!

For Pentax K20D users:
(Older model owners: upgrade already, you're missing all the fun, what are you waiting for? ;-)

I reviewed tons of sites before purchasing this lens. Here the lowdown after some extensive K20D (real world studio with people, not charts) testing:

-"Famous Urban Internet legend" QA issues: Are done and over with. Blast from the (2008) past. All current lenses in stock do not have any issues anymore (in case you heard).

-Sharpness/Focus: Much, much better then lower grade zooms, especially if you stop down an f-stop or two (which you really should anyhow). It really shows all the (detailed) glory of your sensor. Do not settle for a third party lens (Sigma, Tamron, etc.) if you can have the real thing.

-AF: Way more accurate then kit/consumer lenses. Dead-on 95% of the time (versus non * lenses: More like 50%-70%). And in case you're comparing: Yes, it's better than the 17-70mm Pentax.

-A real bargain compared to Nikon/Canon glass: You would have to pay over a grand for the same quality.

-Bottom line: The best Pentax glass you can get other than the (new digital) * primes. Even there, I think you would have a hard time to see a difference.

And yes, I do this for a living (shooting, not reviewing, that is).
I'm just flabbergasted how professional Pentax has become: The Nikon D300 with any glass shoots like a Coolpix in comparison (yes, I own an entire Nikon outfit).
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21 of 22 people found the following review helpful By TOKUSHI on March 27, 2008
Best walk around lens to own. With a K10D, you can have a weather proof combo for around $1,350. Where else can you find this kind of deal? If you add on a DA 50~135 with them, you can have an award winning camera with lenses range from 16~135 f2.8 for $2,100.

Both of these lenses have EXCELLENT SHARPNESS and BOKEH. DA 50~135 has "cleaner" picture though.

These are my 2 favorite lenses now. period.

If you want to buy something that is worth every penny, the combo I have listed above will do!!!
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12 of 13 people found the following review helpful By 6x9 on August 21, 2008
Verified Purchase
++++ READ THE UPDATE FIRST ++++
This lens looks great and feels very solid. Taking into account the professional specs and the price of the lens, it seems to be a real bargain. Well, it is almost true... but not exactly so.

But firstly, the positive:

- Image quality is very good, especially when stepping down by at least one f/stop
- It has good bokeh
- Works with the old "screwdriver" bodies, as well as has SDM

Now, the negatives:

- The quality of this lens is very inconsistent. I knew about this before buying my copy, so it did not come as a surprise when I discovered that my lens was a bit "off". In my case one corner is slightly softer than the rest of the image, but it is only noticeable on test shots wide open and is not field relevant. So I decided to keep it and not to go into a gamble with exchange for another copy.
- You may have a strange effect when this lens is focusing spot on in the daylight and is a complete disaster in incandescent or lower light situations. You may even experience this problem to some extent in all light conditions, depending on you copy of the lens. This happens sometimes with my lens set at 16 mm zoom position. My lens shows in some cases FF, and in some - BF, which may be a problem when shooting at large apertures. My SMCP 35 f/2.0, 77 f/1.8 or 50 f/1.4 do not have this problem on my both cameras (K10D and *ist DS), so I explain this phenomena by lens behavior.
- Focusing is quite slow - both with SDM and with the screwdriver. This is not what you would expect from the professional-grade lens. Perhaps this is a price to pay for supporting the SDM-enabled and the legacy "screwdriver" bodies in one lens.

+++ UPDATE +++
Finally I have bought a new Pentax K5 last year.
Read more ›
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